Re: [amsat-bb] Icom 910H 2m RX problem

["Edward R. Cole" <al7eb@xxxxxxxxxxxxx>]

Jeff,

You say off-air signals that used to be S9+60 are now S4.  That sounds like
15 dB or so difference.  Hazarding a guess, it sounds like you lost your
preamp stage on 2m.  On modern radios that usually is a surface-mount
device.  If you are not familiar with repairing SM components, you should
look for a local ham that can help...or send it to ICOM.

GL Ed - AL7EB

At 03:26 PM 4/1/2005 -0500, kb2m wrote:
> I've used my Icom 910H for Sat Ops for several years and never had a 
>problem. I haven't used the 2m RX in quite awhile, but the other day tried 
>to use it for a 2m IF for RX on 2.4 gig. I powered up the d/c and didn't 
>hear any sig boost, thinking the d/c was toast, or there was no 12vdc to 
>power it. I went to the sat antennas and measured the voltage and found 
>there was +12.5 v at the tower. I then tried another d/c and still no joy. I 
>took the d/c into the shack and hooked it up to my 847 and had sig.
> So to make a longer story short it appears that my 910 has become deaf on 
>2m only. Local repeaters that were +60 over are now S-4. My question is has 
>anyone had the same problem? If so what part's in the 910's front end had to 
>be replaced? I figured I would ask before sending in to Icom. I could 
>replace the parts myself, as I also have access to a service monitor. To 
>keep the reply bandwidth down, I have done the following....
>
>1. The ATT is off.
>2. RF setting is  100%.
>3. The antenna is hooked up, appears good, works fine on another rig.
>4. The 440 RX appears fine.
>
>
>Thanks in advance for any info...
>
>73 Jeff kb2m 
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